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PCI/IOV: Add flag so platforms can skip VF scanning

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Provide a flag to skip scanning for new VFs after SR-IOV enablement.  This
can be set by implementations for which the VFs are already reported by
other means.

Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Sebastian Ott
2018-12-21 15:14:19 +01:00
committed by Bjorn Helgaas
parent 18f9e9d150
commit aff68a5a62
2 changed files with 7 additions and 0 deletions
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6
drivers/pci/iov.c
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@@ -257,6 +257,9 @@ static int sriov_add_vfs(struct pci_dev *dev, u16 num_vfs)
unsigned int i;
int rc;
if (dev->no_vf_scan)
return 0;
for (i = 0; i < num_vfs; i++) {
rc = pci_iov_add_virtfn(dev, i);
if (rc)
@@ -385,6 +388,9 @@ static void sriov_del_vfs(struct pci_dev *dev)
struct pci_sriov *iov = dev->sriov;
int i;
if (dev->no_vf_scan)
return;
for (i = 0; i < iov->num_VFs; i++)
pci_iov_remove_virtfn(dev, i);
}